Hi Doug - This post from the archives addresses the same error message. Please check if this fixes it for you, too:

http://www.mail-archive.com/freesurfer%40nmr.mgh.harvard.edu/msg37920.html

Best,
a.y

On Mon, 9 Nov 2015, Douglas Merkitch wrote:

Hey D,
I also had the same error in the same spot, although I'm using an earlier 
version of tracula and Mac OS. This is my first
time using tracula for DWI processing so I am a little confused as to how to 
best troubleshoot this issue.


Any help from the experts would be great!

Thanks,

Doug

Douglas Merkitch
Neurological Sciences
Rush University Medical Center
Email: douglas_merki...@rush.edu





On Nov 9, 2015, at 6:39 AM, denizzgursel <denizzgur...@gmail.com>
 wrote:

      Dear all,

I am running Tracula preprocessing on NIFTI files. 
After running the command: trac-all -prep -c 
I get the error:

...
processing 
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/dwi_tmp0032
mv -f /data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/bvecs
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/bvecs.norot
xfmrot 
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/dwi.ecclog
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/bvecs.norot
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/bvecs
ln -sf 
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/dwi.nii.gz
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/data.nii.gz
awk: fatal: cannot open file `1000' for reading (No such file or directory)
mri_concat --i 
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/dwi_frame.nii.gz
 --mean --o
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/lowb.nii.gz
niiRead(): error opening file 
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/dwi_frame.nii.gz
ninputs = 1
Checking inputs
ERROR: reading 
/data_august/Deniz/freesurfer/traculaoutput/DTI_con_AbSa90/dmri/dwi_frame.nii.gz
Linux slow.mri.tu-muenchen.de 3.7.10-1.40-desktop #1 SMP PREEMPT Thu Jul 10 
11:22:12 UTC 2014 (9b06319) x86_64 x86_64
x86_64 GNU/Linux

trac-preproc exited with ERRORS at Mon Nov  9 12:47:20 CET 2015

I checked the folder and 'dwi_frame.nii.gz' file was never created.
I attached the trac-all.log file.

Does anybody know how to solve this?


Best,

--
D.
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